/Engine/Source/Runtime/UMG/Public/Components/Image.h
Sets the Brush to the specified Atlas Region.
virtual void SetBrushFromAtlasInterface ( [TScriptInterface](API\Runtime\CoreUObject\UObject\TScriptInterface)< [ISlateTextureAtlasInterface](API\Runtime\Engine\Slate\ISlateTextureAtlasInterface) > AtlasRegion, bool bMatchSize )